可持续发展不再是可选项，而是任何负责任的采矿业务的必要条件。

I think the key to a good performance is to be able to listen and react truthfully.

In business, as in life, you have to be willing to adapt to survive.

每一本书都是一次旅程，每一次旅程都会改变我们。

任何挑战中最难的部分是迈出第一步。